>I heard IPv4-mapped IPv6 address is disabled intentionally in NetBSD.
>I don't understand this issue as well as I can explain the reason.
>Please refer the discussion titled "RFC1933 IPv4 mapped address" in
>the archive of tech-net, December 1999.
> http://mail-index.netbsd.org/tech-net/1999/12/
>Following paper is also focused on this issue.
> http://www.iijlab.net/i-d/draft-itojun-ipv6-transition-abuse-01.txt
and inet6(4). there's real threat in using IPv4 mapped address
with services like wwwoffled.
>BTW, wwwoffle does not bind 0.0.0.0 even if both :: and 0.0.0.0 are
>specified in wwwoffle.conf. It compares specified addresses with
>0:0:0:0:0:0:0:0 and 0.0.0.0, and binds only IPv6 one in this case
>(see src/wwwoffled.c).
>There is no work-around with config file.
>The only way is sysctl (as Frederick wrote).
i'll talk to wwwoffled developer. the above behavior is simply wrong.
itojun